From b8975721d3f25b0e55daf9a23601fd6ceaf0ea63 Mon Sep 17 00:00:00 2001
From: Christopher Pitt <cgpitt@gmail.com>
Date: Tue, 17 Nov 2015 12:53:04 +1300
Subject: [PATCH] Preventing multiple states added to single config

---
 forms/gridfield/GridField.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/forms/gridfield/GridField.php b/forms/gridfield/GridField.php
index ca9fa7f61..6ea7854b8 100644
--- a/forms/gridfield/GridField.php
+++ b/forms/gridfield/GridField.php
@@ -105,7 +105,12 @@ class GridField extends FormField {
 
 		$this->setConfig($config);
 
-		$this->config->addComponent(new GridState_Component());
+		$state = $this->config->getComponentByType('GridState_Component');
+
+		if (!$state) {
+			$this->config->addComponent(new GridState_Component());
+		}
+
 		$this->state = new GridState($this);
 
 		$this->addExtraClass('ss-gridfield');